As we're closing in on the release, I give up on the remaining ones but
I leave them in here for now to try to fix for next release.
I removed the 281 issue about warnings from the statical analyzer scans,
as they seem to be mostly false positives at this point.

When checking if an existing RTSP connection is alive or not, the
checkconnection function might be called with a SessionHandle pointer
being NULL and then referenced causing a crash. This happened only using
the multi interface.
Reported by: Tinus van den Berg
Bug: http://curl.haxx.se/bug/view.cgi?id=3280739

In case a client certificate is used, invalidate SSL session cache
at the end of a session. This forces NSS to ask for a new client
certificate when connecting second time to the same host.
Bug: https://bugzilla.redhat.com/689031

* Rename the object object directory from 'objs' to 'BCC_obj' to be in
sync with my previous patch for lib/Makefile.b32.
* Turn off these warnings to keep the build totally silent (with CBuilder-6
that is).
-w-inl 8026 Functions X are not expanded inline.
-w-pia 8060 Possibly incorrect assignment
-w-pin 8061 Initialization is only partially bracketed
(same added in src/Makefile.b32)
* $(MKDIR) and $(RMDIR) have been replaced with the shell-commands 'md'
and 'rd'. When having MingW/Msys programs 'mkdir.exe' and 'rmdir.exe' in
$PATH, this confuses Borland's make and the result (the cleaning etc.) would
not be as expected.
* Removed the preprocessing step; no need for PP_CMD and the .int files.
curl.exe builds fine w/o and the makefile gets simpler.
* Added a target for creating a compressed hugehelp.c if WITH_ZLIB is defined.
It assumes groff, gzip and perl is available if such an "advanced" users
requests it. Okay? BTW. My groff and Perl needs unix-slashes ('/').
Other perls should handle both forms ('/' and '\').

* Rename the object object directory from 'objs' to 'BCC_obj'. I feel
it should be named properly. Ref. Makefile.Watcom where it's called
'WC_Win32.obj'.
* Turn off these warnings to keep the build totally silent (with CBuilder-6
that is).
-w-inl 8026 Functions X are not expanded inline.
-w-pia 8060 Possibly incorrect assignment
-w-pin 8061 Initialization is only partially bracketed
I'm sure the warnings could be fixed the "proper" way or with some added
"#pragma" statements. But that just clutters the sources IMHO.
* $(MKDIR) and $(RMDIR) have been replaced with the shell-commands 'md'
and 'rd'. When having MingW/Msys programs 'mkdir.exe' and 'rmdir.exe' in
$PATH, this confuses Borland's make and the result (the cleaning etc.) would
not be as expected.
* Added a ".path.int = $(OBJDIR)" to tell make where the $(PREPROCESSED)
files are. Why we need the preprocess step in the fist place is beyond me
(Yang?). But I'll leave that for now.

These problems have gotten no interest/feedback from users:
-275 - Introduce a way to avoid sending USER for FTP connections
-288 - bug 3219997 curl rtmp request curl: (55) select/poll returned error
This problem is rather an autoconf bug with little user interest and it
can be worked around with an older autoconf:
-278 - "Configure $as_echo does not work"
This problem is not fixed:
-286 - bug 3214223 Pipelined HTTP requests with a zero-length body broken

Stop the abuse of CURLE_FAILED_INIT as return code for things not being
init related by introducing two new return codes:
CURLE_NOT_BUILT_IN and CURLE_UNKNOWN_OPTION
CURLE_NOT_BUILT_IN replaces return code 4 that has been obsoleted for
several years. It is used for returning error when something is
attempted to be used but the feature/option was not enabled or
explictitly disabled at build-time. Getting this error mostly means that
libcurl needs to be rebuilt.
CURLE_FAILED_INIT is now saved and used strictly for init
failures. Getting this problem means something went seriously wrong,
like a resource shortage or similar.
CURLE_UNKNOWN_OPTION is the option formerly known as
CURLE_UNKNOWN_TELNET_OPTION (and the old name is still present,
separately defined to be removed in a very distant future). This error
code is meant to be used to return when an option is given to libcurl
that isn't known. This problem would mostly indicate a problem in the
program that uses libcurl.